Fecal floats can be expensive, and don’t always show worm eggs. Many vets send fecal floats out for some strange reason. Many vets will not do a fecal float unless the chicken is seen, and then many will not see chickens. Personally, it is less expensive to just go ahead and use something effective against most worms, and that would be SafeGuard liquid goat wormer or horse paste, or Valbazen. Valbazen dosage is 0.08 ml per pound or 0.5 ml for a 4-6 pound hen. Give it once orally to each chicken and again in 10 days. for SafeGuard 10% fenbendaole goat wormer or horse paste, give 0.23 ml per pound of weight orally for 5 consecutive days. If you ever see the rare tapeworm segments, then use a product with praziquantel, such as Equimax horse paste.